Grass Spiders
Grass Spiders
agelenopsis
Grass spiders of the genus Agelenopsis are highly active, beneficial arachnids famous for weaving flat, sheet-like webs across lawns, fields, and low shrubbery. Unlike typical orb-weavers, these spiders do not rely on sticky silk to trap their prey. Instead, they construct a non-sticky platform with a funnel-shaped retreat at one end. They wait patiently in this dark tunnel until an unsuspecting insect lands on the web, then dash out with lightning speed to subdue it. They are harmless to humans, rarely biting unless squeezed, and are beneficial allies in gardens by consuming vast quantities of pest insects.
生息地: Typically found in grassy lawns, meadows, low-lying shrubs, and around building foundations where they can secure their sheet webs.
外見
Grass spiders are medium-sized arachnids, typically brownish or grayish in color with two prominent, dark longitudinal stripes running down the length of the cephalothorax. Their abdomen features a lighter, chevron-like pattern and, most distinctively, a pair of exceptionally long, finger-like spinnerets protruding from the rear. Their long, hairy legs are often patterned with dark bands, giving them a slightly mottled appearance that blends perfectly with dry grass and leaf litter.
界Animalia門Arthropoda綱Arachnida目Araneae科Agelenidae
カテゴリ
Invertebrateレア度
Common
危険度
1/5 · 非常に低い
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おもしろい事実
Dewy mornings are the best time to see their webs, as water droplets cling to the fine silk, revealing hundreds of hidden funnels across a single lawn.
Their webs are entirely non-sticky, meaning they must rely purely on their fast-running abilities to catch prey before it flies away.
They have extremely long spinnerets at the back of their abdomen, which act like precision nozzles to lay down their flat sheets of silk.
特殊能力
能力
Lightning Sprint
Relying on speed rather than sticky silk, these spiders can run across their webs at incredibly high velocities to intercept prey.
能力
Seismic Detection
They use highly sensitive hairs on their legs to instantly pinpoint the exact location of vibrations made by insects landing on their web.
能力
Double-Ended Retreat
They weave a funnel-like tunnel that has a secondary escape opening at the back, allowing them to flee if a predator enters the front.
サイズと詳細
- 長さ
- 1-2 cm
- 体重
- 0.0001-0.001 kg
- 寿命
- 1 年
- Top Speed
- 2 km/h
- 一度の産卵数
- 50-200
- 抱卵期間
- 20-30 日
食性と食事
Grass spiders sit inside their funnel retreats and rush out to capture insects that land on the flat web sheets.
年齢による違い: Young spiderlings consume tiny insects like aphids, while mature adults tackle larger prey like grasshoppers.
主な食物
- Grasshoppers
- Moths
- Flies
- Beetles
- Ants
採餌方法
- Ambush
生態系とのつながり
hunts
Differential Grasshopper
Melanoplus differentialis
Preys on grasshoppers that land on its web.
eaten by
American Robin
Turdus migratorius
Commonly preyed upon by insect-eating birds.
eaten by
Blue Mud Wasp
Chalybion californicum
Paralyzed and dragged away by solitary wasps to feed their larvae.
特徴
このオブジェクトにはまだ特徴バッジが割り当てられていません。
別名
まだ別名はありません。
コレクション
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安全性
危険度
1/5 · 非常に低い
まだ特別な安全上の注意はありません。
よくある質問
Grass Spidersを見分けるには？
Grass Spidersを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。
Grass Spidersの長さは何ですか？
1-2 cm
Grass Spidersの体重は何ですか？
0.0001-0.001 kg
Grass Spidersの寿命は何ですか？
1 年
Grass Spidersのtop Speedは何ですか？
2 km/h
Grass Spidersは何を食べますか？
Grass spiders sit inside their funnel retreats and rush out to capture insects that land on the flat web sheets.
Grass Spidersは通常どこに生息していますか？
Typically found in grassy lawns, meadows, low-lying shrubs, and around building foundations where they can secure their sheet webs.
Grass Spidersはどのように狩りをしますか？
Ambush
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